.px2rem(@name, @px){
    @{name}: @px / 75 * 1rem;
}
body{
    background: #ffffff;
    .header{
        .px2rem(height, 90);
        width:100%;
        background: #000;
        color: #c6c6c7;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        left:0;
        top:0;
        z-index: 109;
        .left,.right{
            .px2rem(width, 150);
            .px2rem(line-height, 90);
            .px2rem(font-size, 28);
            text-align: center;
        }
        .center{
            .px2rem(font-size, 30);
        }
    }
    .nav{
        .px2rem(margin-top, 90);
        .px2rem(height, 90);
        background: #ffffff;
        ul{
            .px2rem(height, 90);
            display: flex;
            justify-content: space-between;
            li{
                .px2rem(line-height, 90);
                .px2rem(padding-left, 10);
                .px2rem(padding-right, 10);
                .px2rem(font-size, 30);
                color: #999;
            }
            .on{
                border-bottom: 2px solid orangered;
                color: #000;
            }
        }
        ul li:first-child{
            margin-left:20%;
        }
        ul li:last-child{
            margin-right:20%;
        }
    }
    .div{
        width: 100%;
        .px2rem(height, 20);
        background: #eeeeee;
    }
    .main{
        .px2rem(margin-top, 20);
        background: #ffffff;
        h2{
            .px2rem(line-height, 100);
            .px2rem(font-size, 34);
            text-align: center;
            font-weight: bold;
        }
        .dian{
             display: flex;
            justify-content: center;
            align-items: center;
            .round{
                .px2rem(width, 30);
                .px2rem(height, 30);
                border-radius: 50%;
                background: #ccc;
                z-index: 99;
            }
            .xian{
                .px2rem(width, 140);
                .px2rem(height, 4);
                background: #ccc;
                position: absolute;
            }
            .on{
                background: orangered;
                .px2rem(margin-right, 50);
            }
            .one{
                .px2rem(margin-left, 50);
            }
        }
        .kou{
            display: flex;
            justify-content: center;
            align-items: center;
            .px2rem(height, 60);
            .px2rem(font-size, 24);
            .on{
                color: orangered;
                .px2rem(margin-right, 30);
            }
            .one{
                .px2rem(margin-left, 30);
            }
        }
        ul{
            width:80%;
            margin-left: 10%;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            li{
                width: 33.333%;
                .px2rem(margin-top, 60);
                dl{
                    text-align: center;
                    dt{
                        img{
                        .px2rem(width, 120);
                        border: 1px solid #999;
                        border-radius: 50%;
                }
                    }
                }
                
                dd{
                    text-align: center;
                    .px2rem(line-height, 50);
                    .px2rem(font-size, 28);
                }
            }
            .on{
                img{
                    border: 2px solid orangered;
                    border-radius: 50%;
                }
                dd{
                    color: orangered;
                }
            }
        }
        .footer{
            background: #f4f4f4;
            width: 100%;
            .px2rem(height, 100);
            position: fixed;
            bottom: 0;
            left:0;
            z-index: 99;
            border-top:1px solid #ccc;
            p{
                text-align: center;
                .px2rem(line-height, 100);
                .px2rem(font-size, 34);
            }
        }
        .on{
             color: orangered;
        }
    }    
    .why{
        .px2rem(margin-top, 20);
        background: #ffffff;
        display: none;
        h2{
            .px2rem(line-height, 100);
            .px2rem(font-size, 34);
            text-align: center;
            font-weight: bold;
        }
        .dian{
             display: flex;
            justify-content: center;
            align-items: center;
            .round{
                .px2rem(width, 30);
                .px2rem(height, 30);
                border-radius: 50%;
                background: #ccc;
                z-index: 99;
            }
            .xian{
                .px2rem(width, 140);
                .px2rem(height, 4);
                background: #ccc;
                position: absolute;
            }
            .on{
                background: orangered;
                .px2rem(margin-left, 50);
            }
            .one{
                .px2rem(margin-right, 50);
            }
        }
        .kou{
            display: flex;
            justify-content: center;
            align-items: center;
            .px2rem(height, 60);
            .px2rem(font-size, 24);
            .on{
                color: orangered;
                .px2rem(margin-left, 30);
            }
            .one{
                .px2rem(margin-right, 30);
            }
        }
        ul{
            width:80%;
            margin-left: 10%;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            li{
                width: 33.333%;
                .px2rem(margin-top, 60);
                dl{
                    text-align: center;
                    dt{
                        img{
                        .px2rem(width, 120);
                        border: 1px solid #999;
                        border-radius: 50%;
                }
                    }
                }
                
                dd{
                    text-align: center;
                    .px2rem(line-height, 50);
                    .px2rem(font-size, 28);
                }
            }
            .on{
                img{
                    border: 2px solid orangered;
                    border-radius: 50%;
                }
                dd{
                    color: orangered;
                }
            }
        }
        .footer{
            background: #f4f4f4;
            width: 100%;
            .px2rem(height, 100);
            position: fixed;
            bottom: 0;
            left:0;
            z-index: 99;
            border-top:1px solid #ccc;
            display: flex;
            justify-content: space-between;
            div{
                width: 50%;
                border-right: 1px solid #ccc;
                box-sizing: border-box;
                text-align: center;
                .px2rem(line-height, 100);
                .px2rem(font-size, 30);
            }
        }
        .on{
             color: orangered;
        }
    }
    .check{
        display: none;
        h2{
            text-align: center;
            background: #eee;
            .px2rem(line-height, 100);
            .px2rem(font-size, 28);
            color: #999;
            span{
                color:orangered;
            }
        }
        .Check{
            width: 100%;
            dl{
                width: 50%;
                float: left;
                border-bottom: 1px solid #ccc;
                border-right: 1px solid #ccc;
                box-sizing: border-box;
                .px2rem(height, 540);
                text-align: center;
                dt{
                    .px2rem(width, 240);
                    .px2rem(height, 240);
                    margin:20px auto;
                    img{
                        width: 100%;
                    }
                }
                .dd1{
                    .px2rem(height, 80);
                    .px2rem(font-size, 26);
                    .px2rem(line-height, 40);
                    .px2rem(margin-left, 10);
                    .px2rem(margin-right, 10);
                    .px2rem(margin-top, 20);
                    display: -webkit-box;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    word-break: break-all;
                    -webkit-box-orient: vertical;
                    -webkit-line-clamp: 2;
                }
                .dd2{
                    .px2rem(height, 40);
                    .px2rem(font-size, 24);
                    .px2rem(margin-left, 10);
                    .px2rem(margin-right, 10);
                    .px2rem(margin-top, 20);
                    color: #999;
                    display: -webkit-box;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    word-break: break-all;
                    -webkit-box-orient: vertical;
                    -webkit-line-clamp: 2;
                }
                .dd3{
                    color: red;
                    .px2rem(line-height, 40);
                    .px2rem(font-size, 30);
                }
                .dd4{
                    color: #999;
                    .px2rem(line-height, 40);
                    .px2rem(font-size, 22);
                }
            }
        }
        .senter{
            clear: both;
            .px2rem(margin-bottom, 90);
            .px2rem(height, 90);
            background: #eeeeee;
            p{
                .px2rem(line-height, 90);
                .px2rem(font-size, 28);
                text-align: center;
                color: #999;
            }
        }
        .footer{
            width: 100%;
            .px2rem(height, 90);
            display: flex;
            position: fixed;
            left:0;
            bottom:0;
            background: #f4f4f4;
            div{
                width: 50%;
                border-right: 1px solid #ccc;
                .px2rem(line-height, 90);
                text-align: center;
                color: #adadad;
            }
        }
    }
}